On gratitude. You may have seen Shawn Achor's video on Happiness - where he claims that "Happiness" is not the result of success but rather that success follows from first being "happy". His book The Happiness Advantage expands (backed up by research) and gives steps we can take to become happy. One of the exercises he recommends is to keep a gratitude diary where every day you reflect on your day and write down something from the day to be grateful about. Here's a video summary of his book. The relevant section is The Tetris Effect. Or a written review if you'd prefer. The point is that regularly reflecting on things to be grateful about helps re-train your brain to scan for positive patterns in your everyday life rather than negative and over time, it has a beneficial effect.